body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

h1 {
    text-align: center;
}

form, table {
    margin: 20px;
}

table {
    border-collapse: collapse;
    width: 100%;
}

table, th, td {
    border: 1px solid #ccc;
}

th, td {
    padding: 8px;
    text-align: left;
}

button {
    display: inline-block;
    margin-top: 10px;
}

#inventoryUpdate {
    border: 1px solid #ccc;
    padding: 20px;
    margin: 20px;
}